7.2 earthquake triggers tsunami warning in Alaska

[Hacksaw]

Modulators?

https://youtu.be/HmhpmkeptXE

[07VFDInLCD]

Sure sounds like Modulators. Of course, that is going by the sound, which is the Federal Signal UltraVoice (UV) controller. So it could be any electronic siren hooked up to a UV, but Modulator is most likely.

[Bijay]

Yes, Alaska has a system very close to Washington State's AHAB system which is basically a chain of Modulator sirens alongside the coastlines.